2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tus hloov pauv hloov pauv yog tus hloov pauv ywj pheej hauv kev sim . Ib qho kev sim feem ntau muaj peb qhov sib txawv: Qhov kev hloov pauv lossis tus hloov pauv ywj pheej yog qhov uas koj tswj tau. Kev tswj hwm qhov sib txawv ntawm qhov tseem ceeb, qhov sib txawv ntawm kev tswj hwm yog dab tsi tau khaws cia zoo ib yam thoob plaws qhov kev sim, thiab nws tsis yog qhov kev txhawj xeeb tseem ceeb hauv qhov kev sim. Ib qho kev hloov pauv hauv kev tswj hwm qhov sib txawv hauv qhov kev sim yuav ua rau tsis muaj kev sib raug zoo ntawm qhov sib txawv ntawm qhov sib txawv (DV) mus rau qhov txawv txav (IV), yog li skewing cov txiaj ntsig. https://en.wikipedia.org › wiki › Control_variable
Control variable - Wikipedia
yog tus uas koj ua tas mus li.
Dab tsi yog qhov hloov pauv hloov pauv?
Ntau qhov tshwj xeeb tshaj yog, hauv kev sim, qhov sib txawv tuaj yeem ua rau qee yam hloov pauv, yog qhov tshwm sim ntawm qee yam hloov pauv, lossis raug tswj kom nws tsis cuam tshuam dab tsi. Cov hloov pauv uas ua rau qee yam hloov pauv yog hu ua tus hloov pauv ywj pheej lossis hloov pauv hloov pauv.
Yuav ua li cas koj tswj cov kev hloov pauv ywj pheej?
Dua, txhawm rau tswj hwm qhov sib txawv ntawm tus kheej txhais tau tias hloov nws qib systematically kom cov pab pawg sib txawv ntawm cov neeg koom tau nthuav tawm ntau theem ntawm qhov sib txawv, lossis tib pab pawg neeg koom nrog nthuav tawm rau ntau theem ntawm lub sijhawm sib txawv.
Koj puas hloov pauv qhov hloov pauv?
Koj tuaj yeem xav txogKev ywj pheej thiab nyob ntawm qhov sib txawv ntawm qhov ua rau thiab qhov tshwm sim: qhov sib txawv ntawm tus kheej yog qhov sib txawv uas koj xav tias yog qhov ua rau, thaum qhov sib txawv ntawm qhov txawv yog qhov tshwm sim. Hauv kev sim, koj tswj hwm qhov hloov pauv ywj pheej thiab ntsuas qhov tshwm sim hauv qhov sib txawv.
Ib co piv txwv ntawm kev ywj pheej thiab kev vam meej yog dab tsi?
Kev ywj pheej thiab vam meej piv txwv
- Nyob rau hauv kev tshawb fawb los txiav txim seb tus menyuam kawm ntawv pw ntev npaum li cas cuam tshuam rau cov qhab nia xeem, qhov sib txawv ntawm tus kheej yog qhov ntev ntawm lub sijhawm pw tsaug zog thaum qhov sib txawv ntawm qhov sib txawv yog cov qhab nia xeem.
- Koj xav sib piv cov hom ntawv phuam, kom pom qhov twg tuav cov kua dej ntau tshaj.
Pom zoo:
Dab tsi yog qhov hloov pauv thiab hloov pauv hloov pauv?
Point mutations hloov ib leeg nucleotide. Frameshift kev hloov pauv yog ntxiv lossis tshem tawm ntawm nucleotides uas ua rau muaj kev hloov pauv hauv kev nyeem ntawv. frameshift thiab point mutation yog dab tsi? Ib qho kev hloov pauv cuam tshuam rau ib khub hauv paus.
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Qhov kev hloov pauv hloov pauv nyob qhov twg?
Ib lub tuam txhab tuaj yeem nthuav tawm kev hloov pauv hloov pauv ntawm lub ntsej muag ntawm daim ntawv qhia nyiaj txiag lossis hauv cov ntawv sau rau daim ntawv nyiaj txiag. Kev hloov pauv hloov pauv yog dab tsi? Kev hloov pauv hloov pauv yog kho rau cov nyiaj yav dhau los lees paub hauv cov nyiaj tau los zoo tam sim no rov faib rau cov nyiaj tau los lossis poob.
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
